Rotatable Multifunctional Geometric Ruler

This ruler offers a wide range of applications including drawing circles, oval, curved, horizontal parallel lines, and vertical parallel lines.
You can draw all figures fast and accurately with this multifunctional ruler!
This ruler is made of transparent plastic and therefore It is light-weighted and easy to carry. The transparency allows you to draw without interfering with important data.
*This ruler is not suggested for accurate measuring or exam.